kurowski



A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED OCT. 1. 1919.

Patented Sept. 6, 1921.

2 SHEETS-SHEET l.

A. G. F. KUROWSKI- TYPEWRITING MACHINE.

APPLICATION FILED OCT. 1. 1919.

PatentedSept. 6, 1921.

2 SHEETS-SHEET 2- 1 UNITED STATES,

PATENT oFFlcE.

ALFRED c. r. xunowsxr, or BROOKLYN, NEW YORK, ASSIGNOREQUNDERWOOD TYPEwnrrER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELA- TYIPEWRITDIG-MACHINE.

To all whom it may concern:

Be it known that I, Amman G. F. Krmow- SKI, a citizen of the United States, formerly a citizen of Germany, residing in Brooklyn borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification.

This invention relates to typewriting machines, and is herein disclosed as applied to an Underwood standard typewriting machine carriage, which is modified to enable special kinds of work to be done. in illustrated, the' typewriting machine carriage comprises a platen, which is adapted to be moved away from the feed-rolls to enable a thick pack of work-sheets and carbonsheets to be inserted around the platen; and

also as comprising a card-holder which is normally disconnected from the platen, but which is adapted to be connected thereto.

The present invention provides means whereby, when one set of devices is set for one kind of work, the other setfof devices may beheld ineffective and locked against movement.

According to the present disclosure of the invention, such means may include one handle or finger-piece for moving the platen and another handle or finger-piece for connectingthe card-holderto the platen. Hooks may be provided for locking said finger- 'pieces,.said.hooks being so connected that one or the'other is 'alwayseifective.

Otherfeatures and advantages Wlll here I inafter appear.

In the accompanying drawings,

. Figure 1 is a perspective view of an Underwood standard typewriting machine as modified to include one form of the present invention.

Fig. 2 is'adetail rear view, showing the platen disconnected from the card-holder.

Fig. 3'is a diagrammatic side view, in section, showing neither finger-piece actuated, that is, with the machine adapted to do ordinary typewriting.

Fig. 4 is "a similar view, showing the platen 'withdrawn to permit the insertion of a thick pack of work-sheets and carbon-sheets.

Fig. 5is a detail rear view, showing the position of the rack whenthe finger-piece is Specification of Letters Patent.

actuated to connect the card-holder to the platen.

Fig. 6 is a view similar to Fig. 3, but show- Patented Sept. 6, 1921.

Application filed October 1, 1919. Serial No. 327,732.

11, so that work-sheets passed down over the paper-table 10 pass beneath the platen 11 and engage the feed-rolls 12 and 13, so that they are guided upwardly to the front of the platen to permit the types 1 1 to print upon them at the printing line. As here- The platen is journaled in a frame which comprises ends 15 and 16 and includes the paper-table 10, the frame forming part of the carriage 17, upon which is mounted-the line-space lever 18, which is adapted toretate t e usual line-space wheel 19, by driving the usual line-space slide 20.

en it is desired to insert a thick pack of work-sheets and carbon-sheets over the paper-table 10, around the platen, a handle or finger-piece 21, pivoted at 22 upon the platen-frame end 15, may be drawn forward so that an extension 23 of the handle will carry a lug 24 thereon beneath a rock-arm 25, fast upon a shaft 26 journaled in the ends 15 and 16, with the result that the platen 11 will be, drawnupwardly and rearwardly by the upswinging of the rock-arm 25. The connections for accomplishing this include a rock-arm 25 at eachend of the frame, each rock-arm connecte'd to a link 27, which is pivoted at its forward end 28 to the free end of a swinging arm 29, pivoted at 30 in the adjacent end '15 or 16. The arms 29 are provided with openings forming journals for the ends of the platen-axle 31, with the result that, as the rock-arm 25 rises, the links 27, in drawing the arm, draw the platen rearwardly by its axle, theaxle riding in slots 32 in the end-plates 15 and 16. Said slots are adapted to guide the platen upwardly and rearwardly away from the feed-rolls 12 and 13, to permit the thick pack of worksheets and carbon-sheets to be inserted between them. Normally the shaft 26 holds the platen in its forward position with the axle 81 at the forward ends of'the slots 32. To effect this, the shaft 26 is provided with strong torsion springs 33, coiled around it and normally holding a pin 34 upon the there is provided a lug 36 upon the end 15,

adapted to be struck by a bend 37 in the finger-piece 21. Thus,'when the parts occupy the Fig. 2 position, the platen is in its normal writing position.

'To enable writing to be done upon cards, the machine is herein illustrated as comprising a channel bar 38, normally lying below and under the front of the platen, and having clips 39' adapted to hold a card inserted in it. i The channel-bar 38 is adapted to'be connected to the platen by racks 40, of which there is one pivoted to each end of the bar, each rack adapted to mesh with a crown gear 41, fast to the adjacent end of the platen, butnormally standing clear of its gear When it is desired to write upon a card, the channel-bar 38 may be'raised by first connecting it tothe platen and then advancing it through the platen by the linespace lever 18 or hand-wheel 42. To connect the channel-bar38 to the platen, a fingerpiece43,.journaled at 43 on the frame end 16, may be drawn forward so that a rock arm 44 fast to a stub-shaft, 45, also fast to the handle 43, swingsv downwardly ;at the actuation of the handle, with the result that a link 46, pivotedto the rock-arm 44 and also pivoted to a rock-arm 47 fast upon a rockshaft 48, causes-the racks to mesh with the gears 41.

The connectlons between the shaft 48 and the racks 40 include bent-over rock-arms 49 fastupon theshaft, and having their bentover ends pivoted to links 50, with the result that, when a link 50 drops, it rocks the small plate 51, pivoted in the bracket 52 in the adj acent frame end, and causes a pin 53 in the bracket'to swing the rack 40 into mesh with a gear 41. To enablethepins 53to do this,

each pin rides in a slot 54 in the back of the rack 40; and, to keep the pin in the slot, the rack-is prevented from falling forwardly by an ear 55 at the front of the adjacent endplate; When the racks 40 mesh with the gears 41, as shown in Fig. 5, the advance of the platen lifts the channel-bar 38, thus enabling a card to be inserted therein, and then, by rotating the platen, the channel-bar may be set at any desired height for typing upon the card.

In order to prevent both of the handles 21 and 43 from being effective at the same time, there may be'provided a device which normally holds thefinger-piece 21 against actuation, but which is adapted to be held ineffective so-long as thefinger-piece 43 is in its normal position-. "This device is herein illustrated as a hook, comprising a lip 55, which is adapted to overlie a lip 56, projecting from the rock-arm 25. The hook, comprising the lip 55, is pivoted at 57 upon the end-plate 15, anda spring 58 normally tends to'hold the lip 55'ejfective, by drawing upon a link 59, pivoted at 60 upon the hook.

In order to hold the lip 55 normally clear of the lip 56, the link 59 is adapted to be drawn forward by the adjacent rock-arm 49, which it engages-by-a hooked end 60. The connections are such that when the shaft 48 is rocked forward, ittensions the spring 58 by drawing on the link 59, through the rockarm 49; but when the shaft 48 is rotated rearwardly, the link 59 is released, thus permitting the lip 55 to become effective to lock the rock-arm 25. In order to enable the. lip 55 to have a smallthrow, the hooked end 60 may be entirely disconnected from the rockarm 49 early in the throw of the latter.

In order to hold the card-holding frame against accidental displacement, the shaft 48 is provided with lugs61, which normally overlie the ends of the channel-bar 38, thus locking it down, The rearward rotation of the shaft 48 carries the lugs 61 clear of the v 'channelbar 38, thus 1 allowing the cardholder to rise with the advancing platen.

In order to detain the platen in its position to permit the insertionof a thick pack of work-sheets, and carbons, the finger-piece extension 23 maybe provided with a depression 62, terminating in a hook 63, so that, when swung forward, the fingenpiece is held in its swung position by the pin 34,

which rests in the depression 62, and holds the lug 24 in looking position.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: 7 v

1. Ina front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a device for withdrawing said platen rearwardly insaid to move theplaten in said ends, a'ro'ck-shaft,

rock arms pivoted to said links, a card-holdmg device, and a hook connected to said card-holding device adapted to catch one of said rock arms to lock the platen. 1

3. In a front-strike typewriting machine, the combination with a revoluble'platen and a platen frame having ends, of a handle for withdrawing said platen rearwardly in said frame, a card-holding device adapted to feed a card in front of the platen, a finger-piece for making said card-holding device effective, and an interlock between said handle and finger-piece such that when either is actuated the other is inoperable.

4:. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a rock-shaft adapted to shift the platen relatively to said ends, a second rock-shaft, a card-holding device normally held ineffective by said second shaft, a finger-piece for each rock-shaft for making it effective, a floatihg link between said shafts, and a pair of hooks selectively moved to effective position by said link.

5. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a card-hold ing device for supporting a card in front of the platen, a second device for moving the platen away from the printing point, and connections whereby the second device is inoperable when the card-holding device is effective.

6. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a card-holding device adapted to be connected to the platen to carry a card in front of the platen to advance therewith, a second device for moving the platen away from the printing vices to hold either inoperable when the other is operated.

7 In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a card-holding device normally disconnected from the platen, a rock-shaft adjacent said device and adapted to connect it to the platen, a second device adapted to move the platen away from the printing point, a lock for said second device, a floating link, a connection on said shaft adapted to draw on said link to normally hold said lock ineffective, and a finger-piece for operating said rock-shaft.

8. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a card-holding device adapted to hold a card at the front of the platen, means for moving the platen away from the printing point, a lock normally holding said device out of the way, a finger-piece for releasing said device to enable it to support a card in writing position, and connections for automatically locking said means by actuation of said finger-piece.

9. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a device for withdrawing the platen rearwardly in openings in said ends, a card-holder adapted to hold a card at the front of the platen, racks connected to said holder adapted to mesh with gears upon the platen, means for swinging said racks into and out of mesh, and means for locking said device by operating said means to swing the racks into mesh.

ALFRED G. F. KUROWSKI.

Witnesses:

CATHERINE A. NEWELL, EDITH B. LIBBEY. 

